#include "aduc812.h"
#include "driver_io.h"

unsigned char ready(void)  
{
    return RI;
}

void write_char(unsigned char next_char)
{
    SBUF = next_char;
    TI   = 0;
    while( !TI );
}

unsigned char read_char(void)
{
    while( !RI );
    RI = 0;
    return SBUF;
}

void write_string(char * str)
{
    while (*str ) {
	    write_char(*str++);
    }	
}